Date: Thu, 9 Apr 2009 15:40:10 -0400 From: Josh Carroll <josh.carroll@gmail.com> To: dino_vliet@yahoo.com Cc: freebsd-questions@freebsd.org Subject: Re: memtest question on 8 GB RAM AMD64 system Message-ID: <8cb6106e0904091240w240f84f0tbdeab643a87bf959@mail.gmail.com> In-Reply-To: <848751.28828.qm@web51109.mail.re2.yahoo.com> References: <848751.28828.qm@web51109.mail.re2.yahoo.com>
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On Thu, Apr 9, 2009 at 2:43 PM, Dino Vliet <dino_vliet@yahoo.com> wrote: > Dear freebsd people, > > I have just installed 4 x 2gb kingston memory banks (Kingston HyperX 4GB = 800mhz DDR2 Non-ECC CL5 (5-5-5-15) DIMM) onto my AMD 64 system with a X2 52= 00 CPU. The motherboard I have in this system is MSI K9AG Neo2-Digital. > > The system boots fine and I wanted to try memtest to see if there would b= e errors. So I installed that /usr/ports/sysutils/memtest port and did > > # memtest 2400 > > The output I got is: > Continuing with unlocked memory; testing will be slower and less reliable= . > > ....... > pagesize 4096 > pagesizemask is 0xfffffffffffff000 > want 2400MB (2516582400 bytes) > got=A0=A0 2400MB (2516582400 bytes), trying mlock .......failed for unkno= wn reason > Loop 1: > ..... > > In my /etc/rc/conf file I had added these lines in the past (when I had 4= gb RAM installed in it) > > sysctl -w kern.ipc.shmmax=3D1954311424 > sysctl -w kern.ipc.shmall=3D238000 > > What is the case here? Why is memtest failing to use mlock? How can I eve= ntually make sure I can run memtest with 8000mb? > > The purpose of this machine is that it will be used for a various data in= tensive tasks where I need to be able to allocate as much memory possible. = I am running a postgresql database server on it as well to store my source = data. I've run into similar problems trying to use that particular memtest port. If you want to more reliably test the memory, I'd suggest using memtest86+ from http://www.memtest.org/ It is much more thorough and runs independent of the operating system. Regards, Josh
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